(C51) [Hiasobi Club (Fumizuki Kou)] NO BRAND LONELY WINTER
(Puniket 9) [Marchen Box (Various)] Two Toned Romps (Pretty Cure)
[Hirokaworld (Hirokawa)] Neko Ebon Plus
(C83) [OVACAS (Hirokawa Kouichirou)] Buratei Heart. (Joshiraku)
Otonano Omochiya 6 Kan
(CR36) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Iron Maiden (Genshiken, Kujibiki Unbalance)
Otonano Omochiya 12 Futaba no Ohanashi Matome 12
(C66) [INFINITY-FORCE (Mercy Rabbit)] VS∞ VURSUS INFINITY (Capcom vs. SNK)
[OVACAS (Hirokawa Kouichirou)] Kashi 1114 (Ojamajo Doremi)
(Suika Musume 3) [Ovacas (Hirokawa Kouichirou)] Asama de Training (Issho ni Training)
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni Dash!)
(Comic Castle 2005) [Abellcain (Fujimaru Arikui)] EUREKA FIGHT (Eureka seveN)
(Puniket 19) [Hirokaworld (Hirokawa)] Shiikibi (Various)
COMIC Penguinclub Sanzokuban 2003-12
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star)
Otonano Omochiya Vol. 16
Otonano Omochiya 17
(C90) [Hooliganism (Murasaki Syu, Hirokawa Kouichirou)] Kono Subarashii Demi-chan no Demi Sauce! (Demi-chan wa Kataritai, Kono Subarashii Sekai ni Syukufuku o!)
(C81) [Manchin Sakura (COSiNE ,Erect Sawaru and more) Chun-li san to COSiNE ni Shuu Shuunen Kinen Hon (Street Fighter)
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!)
(CR27) [Dangan Densetsu Laser (Hirokawa Tomo, Nerima Yoshito)] Kairaku Gensoku Hagurumashiki Soutei Souchi (Revolutionary Girl Utena)
(CR27) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH (Various)
大人のおもちや3巻
[Amatoro Bow] Hanarete Ite mo Hito ni Fureru Otoko
[Otonano Omochiya (Hirokawa)] Otonano Omochiya 12 Futaba no Ohanashi Matome 2 [English] [Digital] [Ongoing]
Otonano Omochiya Vol. 14
(C54) [OVACAS (Various)] Capricon 1 Director's Cut (Various)
(C68) [OVACAS (Hirokawa Kouichirou)] MAI-CCHING (Mai-HiME)
[Hirokawa Kouichirou] Deep Trip
[Yumeizukosya, OVACAS (Hirokawa Kouichirou)] Ebisu Taisen (Sakura Taisen)
COMIC Penguin Club Sanzokuban 2000-09
Otonano Omochiya 6 Kan Ch. 1
(Puniket 6) [OVACAS (Hirokawa Kouichirou)] AxA (Ojamajo Doremi)
[Hirokawa Tomo] Cherry Concerto
(Comic Castle Final) [Nipopo Crisis, OVACAS (Genka Ichien, Hirokawa Kouichirou) Patsukin Dynamite HEAVEN (Bakusou Kyoudai Lets & Go!!)
Haru Matsuri Chichi Matsuri 2010
(ABC 5) [OVACAS (Hirokawa Kouichirou)] Iro Iro Gal and Dou (Various)
(Puniket 11) [Hirokaworld (Hirokawa)] Pachie-bon (3-nen B-gumi Kinpachi Sensei Densetsu no Kyoudan ni tate!)
(C56) [OVACAS (Various)] Dore Mix (Ojamajo Doremi)
(C70) [OVACAS (Hirokawa Kouichirou)] Magical? Banana (Renkin 3-kyuu Magical? Pokaan)
(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 (Various)
Otonano Omochiya Vol. 13
COMIC Penguinclub Sanzokuban 2003-08
[Hirokawa Tomo] Puripanyu Z
[Anthology] Aokan Special
(C68) [OVACAS (Hirokawa Kouichirou)] MAI-CCHING (Mai-HiME) [English] [SaHa]
Otonano Omochiya Vol. 15
[Anthology] Love Chara Taizen No. 7 (Various)
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus) [English] [shakuganexa]
Men's Dolphin 1999-11-01 Vol.03